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Finding the Fourth Proportional to 2,785,781.70, 4,178,672.55 and 2,785,781.70

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Solution

The fourth proportional to 2,785,781.70, 4,178,672.55 and 2,785,781.70 is: 4,178,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785,781.70 : 4,178,672.55 = 2,785,781.70 : x
  2. Step 2: Convert to fraction form
    2,785,781.70/4,178,672.55 = 2,785,781.70/x
  3. Step 3: Cross multiply
    2,785,781.70x = 4,178,672.55 × 2,785,781.70
  4. Step 4: Simplify right side
    2,785,781.70x = 11,640,869,520,082.34
  5. Step 5: Solve for x
    x = 11,640,869,520,082.34/2,785,781.70
  6. Step 6: Final answer
    x = 4,178,672.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.